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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ecl.h"
#include "ecl-curve.h"
#include "ecl-priv.h"
#include <stdlib.h>
#include <string.h>
#define CHECK(func) \
if ((func) == NULL) { \
res = 0; \
goto CLEANUP; \
}
/* Duplicates an ECCurveParams */
ECCurveParams *
ECCurveParams_dup(const ECCurveParams *params)
{
int res = 1;
ECCurveParams *ret = NULL;
CHECK(ret = (ECCurveParams *)calloc(1, sizeof(ECCurveParams)));
if (params->text != NULL) {
CHECK(ret->text = strdup(params->text));
}
ret->field = params->field;
ret->size = params->size;
if (params->irr != NULL) {
CHECK(ret->irr = strdup(params->irr));
}
if (params->curvea != NULL) {
CHECK(ret->curvea = strdup(params->curvea));
}
if (params->curveb != NULL) {
CHECK(ret->curveb = strdup(params->curveb));
}
if (params->genx != NULL) {
CHECK(ret->genx = strdup(params->genx));
}
if (params->geny != NULL) {
CHECK(ret->geny = strdup(params->geny));
}
if (params->order != NULL) {
CHECK(ret->order = strdup(params->order));
}
ret->cofactor = params->cofactor;
CLEANUP:
if (res != 1) {
EC_FreeCurveParams(ret);
return NULL;
}
return ret;
}
#undef CHECK
/* Construct ECCurveParams from an ECCurveName */
ECCurveParams *
EC_GetNamedCurveParams(const ECCurveName name)
{
if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) ||
(ecCurve_map[name] == NULL)) {
return NULL;
} else {
return ECCurveParams_dup(ecCurve_map[name]);
}
}
/* Free the memory allocated (if any) to an ECCurveParams object. */
void
EC_FreeCurveParams(ECCurveParams *params)
{
if (params == NULL)
return;
if (params->text != NULL)
free(params->text);
if (params->irr != NULL)
free(params->irr);
if (params->curvea != NULL)
free(params->curvea);
if (params->curveb != NULL)
free(params->curveb);
if (params->genx != NULL)
free(params->genx);
if (params->geny != NULL)
free(params->geny);
if (params->order != NULL)
free(params->order);
free(params);
}
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